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Stories about: fluctuation

Scientists Produced Copper Rods That Swarm Like Fish Generally, the action of swarming applies to the animal kingdom, for instance to schools of fish, groups of insects and birds. This aggregation of similar elements that help animals find mates and survive predator attacks has now been successfully achieved in artificial systems made of copper rods.Vijay Narayan of t... 6 July 2007 10:22 GMT The Sea That Comes and Goes This is the strangest sea in the world. It is not even a real sea, but the largest lake in the world by area: the Caspian Sea measures 371,000 square km (143,244 square mi), almost as much as California and is located between Europe and Asia. But this lake is salty, even if its salt concentration represents just one... 1 May 2007 19:06 GMT